Moore Island may refer to one of several islands;
- Moore Island (Belcher Islands), an uninhabited island in the Qikiqtaaluk Region, Nunavut
- Moore Island (Boat Passage), an uninhabited island in the Qikiqtaaluk Region, Nunavut
- Moore Island (Hopewell Islands), an uninhabited island in the Qikiqtaaluk Region, Nunavut
- Moore Island (Intrepid Passage), an uninhabited island in the Qikiqtaaluk Region, Nunavut
- Moor Island, formerly Moore Island, an uninhabited island in the Kivalliq Region, Nunavut